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-rw-r--r--sysdeps/ieee754/dbl-64/e_j1.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/sysdeps/ieee754/dbl-64/e_j1.c b/sysdeps/ieee754/dbl-64/e_j1.c
index bc7ca0609f..b7b8a9a644 100644
--- a/sysdeps/ieee754/dbl-64/e_j1.c
+++ b/sysdeps/ieee754/dbl-64/e_j1.c
@@ -58,6 +58,7 @@
* by method mentioned above.
*/
+#include <errno.h>
#include <math.h>
#include <math_private.h>
@@ -205,7 +206,10 @@ __ieee754_y1 (double x)
}
if (__glibc_unlikely (ix <= 0x3c900000)) /* x < 2**-54 */
{
- return (-tpi / x);
+ z = -tpi / x;
+ if (__isinf (z))
+ __set_errno (ERANGE);
+ return z;
}
z = x * x;
u1 = U0[0] + z * U0[1]; z2 = z * z;